US4938690A - Ingot pusher furnace with rail drawbridges - Google Patents
Ingot pusher furnace with rail drawbridges Download PDFInfo
- Publication number
- US4938690A US4938690A US07/364,835 US36483589A US4938690A US 4938690 A US4938690 A US 4938690A US 36483589 A US36483589 A US 36483589A US 4938690 A US4938690 A US 4938690A
- Authority
- US
- United States
- Prior art keywords
- enclosure
- rail
- ingots
- furnace
- support rails
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
- F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
- F27B9/22—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace on rails, e.g. under the action of scrapers or pushers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/06—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity heated without contact between combustion gases and charge; electrically heated
- F27B9/10—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity heated without contact between combustion gases and charge; electrically heated heated by hot air or gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/18—Door frames; Doors, lids, removable covers
- F27D1/1858—Doors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/0024—Charging; Discharging; Manipulation of charge of metallic workpieces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/04—Ram or pusher apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/12—Travelling or movable supports or containers for the charge
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D2003/0034—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities
- F27D2003/0068—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities comprising clamps or tongs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/12—Travelling or movable supports or containers for the charge
- F27D2003/124—Sleds; Transport supports
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/12—Travelling or movable supports or containers for the charge
- F27D2003/125—Charging cars, lift trolleys
- F27D2003/126—Charging cars, lift trolleys with long arms, charging forks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
- F27D7/04—Circulating atmospheres by mechanical means
- F27D2007/045—Fans
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2001/00—Composition, conformation or state of the charge
- F27M2001/15—Composition, conformation or state of the charge characterised by the form of the articles
- F27M2001/1539—Metallic articles
- F27M2001/1547—Elongated articles, e.g. beams, rails
- F27M2001/1552—Billets, slabs
Definitions
- This invention relates generally to ingot pusher furnaces and more particularly, it relates to an improved pusher furnace which includes means for reducing heat loss from the charging and discharging ends of the furnace so as to produce a more efficient and uniform heating of the ingots.
- FIG. 1 of the drawings A prior art furnace 10 is illustrated in FIG. 1 of the drawings and has been labeled "Prior Art.”
- the rails 36 used for support and movement of a plurality of aluminum ingots 38 to be heated into and out of the enclosure 20 actually extend beyond charging end 17 and discharging end 19 of the furnace 10.
- the bottoms of the charging door 24 and discharging door 28 in their closed positions will come to rest on the top surface of the rails 36.
- the present invention is concerned with the provision of an improved ingot pusher furnace which includes an insulated furnace enclosure formed by a bottom wall, a front wall, a rear wall and a top wall.
- the enclosure receives a plurality of ingots to be heated.
- a plurality of heat sources are provided to heat a gaseous medium within the enclosure.
- a plurality of fans are provided to circulate the gaseous medium within the enclosure.
- Support rails are disposed in the bottom wall for facilitating support and movement of the ingots within the enclosure.
- a charging door located adjacent the front wall is adapted to close a first opening formed in the front wall.
- a discharging door located adjacent the rear wall is adapted to close a second opening formed in the rear wall.
- the support rails extend between the first opening in the front wall and the second opening in the rear wall and terminates inside of the charging and discharging doors.
- the charging and discharging doors extend below the support rails in their closed positions so as to provide a positive seal.
- FIG. 1 is a side elevational view of an ingot pusher furnace of the prior art
- FIG. 2(a) is a side elevational view of an ingot pusher furnace of the present invention with an up-ender mechanism illustrating the charging door in the open position:
- FIG. 2(b) is a side elevational view of an ingot pusher furnace of the present invention with an up-ender mechanism illustrating the charging door in the closed position;
- FIG. 3(i a) is a side elevational view of an ingot pusher furnace of the present invention with a down-ender mechanism, illustrating the discharging door in the open position;
- FIG. 3(b) is a side elevational view of an ingot pusher furnace of the present invention with a down-ender mechanism, illustrating the discharging door in the closed position;
- FIG. 4 is a side elevational view of another embodiment of the ingot pusher furnace according to the present invention and having rail drawbridges arranged adjacent the charging and discharging doors;
- FIG. 5 is an enlarged view of the rail drawbridge of FIG. 4 arranged adjacent the charging door, illustrating the drawbridge in the lowered position;
- FIG. 6 is a top plan view of the rail drawbridge, taken along the lines 6--6 of FIG. 5
- FIG. 1 an ingot pusher furnace of the prior art designated generally by reference numeral 10.
- the pusher furnace 10 includes a bottom wall 12, a front wall 14, a rear wall 16, and a top wall or roof 18 which are used to define an insulated enclosure 20.
- the front wall 14 is formed with a large entrance opening 22 which is covered by a front charging door 24.
- the rear wall 16 is formed with a large exit opening 26 which is covered by a rear discharging door 28.
- the front charging and rear discharging doors 26, 28 are adapted to slide in a vertical plane under the control of elevating mechanisms 30 which are well known in the art.
- a plurality of conventional gas burners 32 are positioned in the top wall 18 and deliver a hot gaseous medium to the insulated enclosure 20.
- radiant tube gas fired or electric heaters may be utilized to heat the enclosure 20.
- the insulated enclosure 20 is divided into a plurality of heating zones 20a, 20b and 20c.
- the top wall 18 supports a plurality of large gas recirculating fan assembles 34 which are used to move the hot gaseous medium within the heating zones of the enclosure.
- In the bottom wall 12 there are formed a plurality of support rails, one of which is depicted and designated by reference numeral 36, which facilitate the support and movement of a plurality of aluminum ingots 38 to be heated within the enclosure 20.
- the aluminum ingots 38 are substantially rectangular in shape and the underneath surfaces thereof are supported by respective shoe assemblies 37. The shoe assemblies are supported by the rails 36.
- the support rails 36 actually extend a predetermined distance beyond both the entrance opening 22 at the charging end 17 and the exit opening 26 at the discharging end 19 of the furnace 10.
- the bottom of the charging door 24 will come to rest upon the top surface of the support rails 36.
- the bottom of the discharging door 28 will come to rest upon the top surface of the support rails 36.
- outside cold air is very likely to leak into the furnace enclosure 20 around the rails 36 at the location where they extend through the respective door openings 22, 26. Further, the hot gaseous medium within the enclosure 20 will be lost due to the leaks causing wasting of energy and thus redoing the efficiency of the furnace.
- FIG. 1 there is shown one type of handling mechanism 40 referred to generally as an "up-ender” mechanism which is positioned at the charging end 17 of the furnace.
- the up-ender mechanism 40 may be located on an ingot transfer car or cart 41 and is used to push forward the ingots 38 to be heated into the furnace at the charging end thereof via the entrance opening 22.
- another type of handling mechanism 39 such an ingot rotating mechanism referred generally to as a down-ender mechanism is positioned at the discharging end 19 of the furnace.
- the down-ender mechanism may also be located on an ingot transfer car or cart 43 and is used to carry the ingots 38 after heating away from the furnace via the exit opening 26.
- the present invention is an improvement over the ingot pusher furnace 10 of FIG. 1 and includes means for creating effective seals at he charging and discharging ends of the furnace so as to produce a more uniform heating of the ingots.
- FIG. 2(a) there is shown a charging end portion of an improved ingot pusher furnace 42 of the present invention.
- the pusher furnace 42 includes support rails, one of which is depicted and designated by reference numeral 44, for facilitating the support and movement of the ingots 46 to be heated through its insulated enclosure 50.
- the rails 44 carry shoe assemblies 48 which are used to support the underneath surfaces of the aluminum ingots 46.
- the support rails 44 are designed so as to terminate or end substantially at the entrance door opening 52 and do not extend beyond the door opening 52.
- an up-ender mechanism 56 similar to the handling mechanism 40 of FIG. 1 is used to push forward the ingot 46 and shoe assembly 48 into the furnace enclosure 50 and all of the ingots already within the furnace each are advanced a step forward.
- the car or cart 58 carrying the up-ender mechanism 56 is moved back to a position shown in FIG. 2(b) and the charging door 54 is lowered by a suitable mechanism so as to assume a closed position.
- the charging door 54 extends below the support rail 44 and comes to rest on a stop member 60.
- the ends of the rails terminate inside of the charging door 54 and are substantially flush with the interior surface 62 of the charging door thereby creating a positive seal at the lower end of the door.
- the stop member 60 is disposed adjacent the front wall 14 and below the support rails 44.
- the stop member 60 is preferably of a triangular-shaped configuration and has a top surface 61.
- the bottom surface of the charging door 54 may be provided with a sealing member 63 for contacting the top surface of the stop member 60 when the charging door is in the closed position.
- FIG. 3(a) of the drawings there is shown a discharging end portion of the improved ingot pusher furnace 42 of the present invention.
- the support rails 44 terminate or end substantially at the exit door opening 64 and do not extend beyond the door opening 64.
- a down-ender or ingot rotating mechanism 68 similar to the handling mechanism 39 of FIG. 1 is used to receive the heated ingots as they are discharged from the furnace.
- the car or cart 70 carrying the down-ender mechanism 68 is moved away from the furnace to a position shown in FIG. 3(b) and the discharging door 66 is lowered by a suitable mechanism so as to assume a closed position.
- FIG. 3(b) As can be seen in FIG.
- the discharging door 66 extends below the rails 44 and the bottom thereof comes to rest on a stop member 72. Consequently, the ends of the, rails 44 terminate inside of the discharging door 66 and are substantially flush with the interior surface 74 of the discharging door, providing a positive seal at the lower end of the door.
- the stop member 72 is disposed adjacent the rear wall 16 and below the support rails 44.
- the stop member 72 is preferably of a triangular-shaped configuration and has a top surface 71.
- the bottom surface of the discharging door 66 may be provided with a sealing member 73 for contacting the top surface of the stop member 72 when the discharging door 66 is in the closed position.
- FIG. 4 Another embodiment of the present invention is illustrated in FIG. 4, wherein an improved ingot pusher furnace 110 is shown therein.
- the ingot pusher furnace 110 includes a bottom wall 112, a front wall 114, a rear wall 116, and a top wall or roof 118 which are used to define an insulated enclosure 120.
- the top wall 118 is formed with a large entrance opening 122 which is covered by a front charging door 124.
- the rear wall 116 is formed with a large exit opening 126 which is covered by a rear discharging door 128.
- the front charging and rear charging doors 126, 128 are adapted to slide in a vertical plane under the control of elevating mechanisms 130 which are well known in the art.
- a plurality of gas burners 132 are positioned in the top wall 118 and deliver a hot gaseous medium to the insulated enclosure 120. Radiant tube gas fired or electric heaters may be utilized alternately to heat the enclosure 120 in lieu of the gas burners.
- the insulated enclosure 120 is divided into a plurality of heating zones 120a, 120b and 120c.
- the top wall 118 supports a plurality of barge gas recirculating fan assemblies 134 which are used to move the hot gaseous medium within the heating zones of the enclosure.
- a plurality of support rails, one of which is depicted and designated by reference numeral 136, are supported above the bottom wall 112 by a plurality of posts 135.
- the support rails serve to facilitate the support and movement of a plurality of aluminum ingots 138 to be heated within the enclosure 120.
- the aluminum ingots 138 are substantially rectangular in shape and the underneath surfaces thereof are supported by respective shoe assemblies 137.
- Shoe assemblies are supported on their underlying surfaces by the support rails 136.
- the ends 136a, 136b of support rails 136 are designed so as to terminate inside of the respective charging and discharging doors 124, 126, and the doors are fabricated to extend below the support rails when closed, thereby creating a positive seal on each side of the doors.
- the car 58 is required to be moved initially to the right so as to close the gap and mate with the ends of the support rails before the ingot can be pushed forward into the furnace enclosure 50. Further, after the ingot has been pushed forward, the car 58 must be moved back to the position shown in FIG. 2(b) so that charging door 54 can be closed to provide an efficient seal.
- similar operations are required for the car 70 shown in FIGS. 3(a) and 3(b) so as to receive the ingots as they are discharged before the discharging door 66 can be closed.
- the improved ingot pusher furnace 110 has been provided with means disposed adjacent the charging and discharging doors and cooperating with the ends of the support rails so as to facilitate the loading and unloading of the ingots.
- This means is comprised of a first rail drawbridge mechanism 140 located adjacent the charging door to facilitate the movement of the ingots into the furnace enclosure and a second rail drawbridge mechanism 141 located adjacent the discharging door to facilitate movement of the ingots out of the furnace enclosure.
- the rail drawbridge mechanism 140 includes a pair of rail members or platforms 142a, 142b, illustrated in FIG. 6, which are movable between a raised vertical position (FIG. 4) so that the charging door 122 can be closed and a lowered horizontal position (FIG. 5) to permit loading of the ingots into the furnace enclosure.
- the rail drawbridge mechanism 141 is identical in construction to the mechanism 140 and includes a pair of rail members which are movable between a raised vertical position so that the discharging door 126 can be closed and a lowered horizontal position (FIG. 4) to permit unloading of the ingots out of the furnace enclosure.
- each of the rail members 142a, 142b is raised and lowered by actuator means formed of a hydraulic or pneumatic cylinder 144 having a piston rod 145 movable therein.
- the outer end of the piston rod 145 is secured to one end of a pair of rocker members 146 by means of a clevis pin 148 received in a hole 150.
- the other ends of the rocker members 146 are pivotally connected to ends 152 of the respective rail members 142a and 142b by means of a clevis pin 156 received in a hole 158 which is formed in a linkage member 159.
- the charging door 124 In the lowered horizontal position, the charging door 124 is opened and the inner ends 154 of the rail members 142a and 142b contactly engage the ends 136a of the support rails 136.
- the piston rod 145 When the piston rod 145 is moved upwardly from the cylinder 144, the rail members 142a and 142b are rotated approximately 90° in a counter-clockwise manner to the raised vertical position, as shown in the dotted lines of FIG. 5. As a result, the charging door 124 can now be closed to effect the positive seal.
- the charging door 124 In order to lower the rail members 142a, 142b, the charging door 124 must be opened and then the piston rod 145 is retracted into the cylinders 144. This causes the rail members to be rotated approximately 90° in the clockwise direction to be lowered to the horizontal position, as shown in the solid lines of FIG. 5.
- the present invention provides an improved ingot pusher furnace which includes means for reducing heat loss from the charging and discharging ends of the furnace so as to produce a more efficient and uniform heating of the ingots.
- the pusher furnace of the present invention includes support rails extending between a first opening in the front wall and a second opening in the rear wall and terminating inside of the charging and discharging doors. Further, the charging and discharging doors extend below the support rails in their closed position so as to provide a positive seal.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Tunnel Furnaces (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
Description
Claims (14)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/364,835 US4938690A (en) | 1989-06-12 | 1989-06-12 | Ingot pusher furnace with rail drawbridges |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/364,835 US4938690A (en) | 1989-06-12 | 1989-06-12 | Ingot pusher furnace with rail drawbridges |
Publications (1)
Publication Number | Publication Date |
---|---|
US4938690A true US4938690A (en) | 1990-07-03 |
Family
ID=23436301
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US07/364,835 Expired - Fee Related US4938690A (en) | 1989-06-12 | 1989-06-12 | Ingot pusher furnace with rail drawbridges |
Country Status (1)
Country | Link |
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US (1) | US4938690A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5645418A (en) * | 1996-02-20 | 1997-07-08 | Tippins Incorporated | Pusher furnace drop-out conveyor |
US20060033246A1 (en) * | 2004-08-16 | 2006-02-16 | Swaney Glenn R | Hydraulic aluminum ingot positioner and pusher |
DE102009053343A1 (en) * | 2009-11-17 | 2011-05-19 | Otto Junker Gmbh | Pusher type furnace for use in furnace plant for thermal treatment of aluminum rolling ingots, has furnace housing comprising closable openings formed in side walls for feeding furnace with goods and/or for removal of goods from furnace |
CN103712451A (en) * | 2012-10-09 | 2014-04-09 | 丹阳市江南工业炉有限公司 | Furnace door for heating furnaces |
WO2014198600A1 (en) * | 2013-06-11 | 2014-12-18 | Gautschi Engineering Gmbh | Transporting apparatus for rolling ingots, use of such a transporting apparatus, and method for transporting rolling ingots |
US20160290720A1 (en) * | 2013-09-27 | 2016-10-06 | Adpv Cigs Ltd. | Furnace comprising a sealed temperature-controlled section |
US10196951B2 (en) * | 2016-05-31 | 2019-02-05 | Boiler Tube Company Of America | Selective catalytic reactor (SCR) door systems |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2033331A (en) * | 1933-09-28 | 1936-03-10 | Surface Combustion Corp | Heat treating furnace |
US2254900A (en) * | 1939-10-20 | 1941-09-02 | Westinghouse Electric & Mfg Co | Door seal for furnaces with protective atmosphere |
US2270484A (en) * | 1940-02-19 | 1942-01-20 | Chicago Flexible Shaft Co | Self-sealing door for furnaces |
US4054411A (en) * | 1976-06-22 | 1977-10-18 | Btu Engineering Corporation | High temperature furnace door seal |
US4427378A (en) * | 1982-03-29 | 1984-01-24 | Atomel Corporation | Closure and seal construction for high-pressure oxidation furnace and the like |
US4859178A (en) * | 1988-08-15 | 1989-08-22 | Seco/Warwick Corporation | Ingot pusher furnace with means for reducing heat loss |
-
1989
- 1989-06-12 US US07/364,835 patent/US4938690A/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2033331A (en) * | 1933-09-28 | 1936-03-10 | Surface Combustion Corp | Heat treating furnace |
US2254900A (en) * | 1939-10-20 | 1941-09-02 | Westinghouse Electric & Mfg Co | Door seal for furnaces with protective atmosphere |
US2270484A (en) * | 1940-02-19 | 1942-01-20 | Chicago Flexible Shaft Co | Self-sealing door for furnaces |
US4054411A (en) * | 1976-06-22 | 1977-10-18 | Btu Engineering Corporation | High temperature furnace door seal |
US4427378A (en) * | 1982-03-29 | 1984-01-24 | Atomel Corporation | Closure and seal construction for high-pressure oxidation furnace and the like |
US4859178A (en) * | 1988-08-15 | 1989-08-22 | Seco/Warwick Corporation | Ingot pusher furnace with means for reducing heat loss |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5645418A (en) * | 1996-02-20 | 1997-07-08 | Tippins Incorporated | Pusher furnace drop-out conveyor |
WO1997030319A1 (en) * | 1996-02-20 | 1997-08-21 | Tippins Incorporated | Pusher furnace drop-out conveyor |
US5836759A (en) * | 1996-02-20 | 1998-11-17 | Tippins Incorporated | Pusher furnace drop-out conveyor |
US20060033246A1 (en) * | 2004-08-16 | 2006-02-16 | Swaney Glenn R | Hydraulic aluminum ingot positioner and pusher |
DE102009053343A1 (en) * | 2009-11-17 | 2011-05-19 | Otto Junker Gmbh | Pusher type furnace for use in furnace plant for thermal treatment of aluminum rolling ingots, has furnace housing comprising closable openings formed in side walls for feeding furnace with goods and/or for removal of goods from furnace |
DE102009053343B4 (en) * | 2009-11-17 | 2012-08-30 | Otto Junker Gmbh | Pusher furnace, furnace plant and thermal treatment process |
CN103712451A (en) * | 2012-10-09 | 2014-04-09 | 丹阳市江南工业炉有限公司 | Furnace door for heating furnaces |
WO2014198600A1 (en) * | 2013-06-11 | 2014-12-18 | Gautschi Engineering Gmbh | Transporting apparatus for rolling ingots, use of such a transporting apparatus, and method for transporting rolling ingots |
CN105408717A (en) * | 2013-06-11 | 2016-03-16 | 高奇工程有限公司 | Transporting apparatus for rolling ingots, use of such a transporting apparatus, and method for transporting rolling ingots |
CN105408717B (en) * | 2013-06-11 | 2017-11-24 | 高奇工程有限公司 | The purposes of transporting equipment, this transporting equipment for ingot for rolling and the method for transporting ingot for rolling |
RU2640508C2 (en) * | 2013-06-11 | 2018-01-09 | Гаучи Энджиниринг Гмбх | Conveying machine for rolling ingots, application of such conveying machine and method for conveying rolling ingots |
US10099266B2 (en) | 2013-06-11 | 2018-10-16 | Gautschi Engineering Gmbh | Transporting apparatus for rolling ingots, use of such a transporting apparatus, and method for transporting rolling ingots |
US20160290720A1 (en) * | 2013-09-27 | 2016-10-06 | Adpv Cigs Ltd. | Furnace comprising a sealed temperature-controlled section |
US10196951B2 (en) * | 2016-05-31 | 2019-02-05 | Boiler Tube Company Of America | Selective catalytic reactor (SCR) door systems |
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